Even as Tehran signals an interest in nuclear talks, many experts have already envisioned what the world would look like if the country got nuclear weapons. It wouldn't be as dire as many fear, but it would unleash new uncertainties - and perhaps a regional arms race.
The UN's nuclear watchdog is set to rebuke Iran over its nuclear program. No sanctions are planned, but the US will keep pushing, and some experts say diplomacy could still work.
Qaddafi stopped his nuclear program. Would NATO have bombed if he hadn’t? Now, Iran watches as nonnuclear states are invaded and nuclear ones win favors.
Iran has embraced a Russian proposal to restart nuclear negotiations with the international community, but President Mahmoud Ahmadinejad's political rivals may try to block the talks.
With Secretary of State Clinton in India this week, the US and India are attempting to make up for decades of estrangement. However, disagreements about a 2005 nuclear deal threaten progress.
'We need to overhaul IAEA,' says Najmedin Meshkati of University of Southern California, repeating a call that is gaining traction amid the Japan nuclear crisis.
Iran responded to the failure of nuclear talks last weekend with dual-track rhetoric, saying that 'there is hope' but accusing the West of 'blocking progress.'
Nuclear talks between Iran and six world powers ran aground on Iranian preconditions about enrichment and sanctions; no plans to meet again.